Rotary engine



(No Model.)

3 Sheets-Sheet 1. S. G. BROSIUS.

ROTARY ENGINE.

Patented Dee. 22, 1891.

s sheetssheet 2.v

(No Model.) 1 Y S. G. BROSIUS.

u ROTARY ENGINE. No. 465,519. Y 'Patented-1160. 22.11891.

'3 -sheets-sheen; 3.

(No Model.)

S. G. BROSIUS. ROTARY ENGINE.

No. 465,519. Patented 1360.22, 1891.

UNITED STATES PATENT OFFICE.

SAMUEL GLEN-VILLE BROSIUS, OF SAVANNAH, GEORGA.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 465,519, dated December 22, 1891 l Application iiled April 17, 1891.

To a/ZZ whom it may concern:

Beit known that l, SAMUEL GLENvlLLE BRO- SIUS, of Savannah, in the county of Chatham and State of Georgia, have invented a new and useful Improvement in Rotary Engines, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention has for its objects to produce a rotary engine of the least possible friction and having steam-tight packing; to construct an engine in such amanner so that no part shall bind or cramp, and so that the pistons will be at rest when under pressure, and to admit steam so as to avoid binding the cylinders or pistons in any position; to avoid all centrifugal and centripetal friction in packing or any packing causing undue friction; to admit steam simultaneously to the cylinders so as to avoid all binding or cramping;.to operate the abutments substantially parallel to the axis of rotation of the rotating cylinder, thereby overcoming all centrifugal friction which would otherwise be encountered; to operate the abutments when the same are not under pressure; to construct the cam or cams which control the movements of the abutments with the least possible throw, thereby avoiding jar., and also constructing said cam or cams with periods of rest and periods of throw; to construct an engine in such a manner that the abutments, after the piston has passed, close the cylinders and act as cylinder-heads; to seat the abutments so that the periods of rest and periods of throw may be controlled by a cam or some mechanical equivalent; to overcome the jar incident to the use of cams in operating the reciprocating abutments in passing the stationary pistons in a rotary engine; to

reciprocate or control the reciprocating pistons in a rotary engine Vas the abutment passes said pistons; to reciprocate or control the reciprocating pistons in a rotary engine as the abutment passes the pistons by means of a steam-cylinder acting as a dash-pot; to reciprocate or control the reciprocating piston in a rotary engine as the abutmentpasses said piston by means of a steam-cylinder acting as a dash-pot in conjunction with a cam, which governs-the reciprocations of the pistons; to admit and cut off steamv to the dashpot cylinder by a compound lever operated Serial No. 389.309. (No model.)

vby an eccentric, and to admit and cut off steam to the dash-pot cylinder, so as to operate the pistons when the abutment passes said pistons. These and other objects are accomplished by the mechanism hereinafter described.

This invention consists of certain novel features hereinafter described, and pointed out in the claims. y

Like letters of reference refer to like parts throughout the several views.

Figure l is a view in cross-section on line 0c Qc of Fig. 2. Fig.2 is an elevation in crosssection oh line @c of Fig. l. Fig. 3 is a crosssection of the rotating cylinder on line fc3 ac3 of Fig. 4:. Fig. t-is a cross-section on line :v2 @o2 of Fig. 3. Fig. 5 is an elevation showing a portion of the head containing one upistonseat and one steam and one exhaust port. Fig. 6 is a central cross-section of Fig. 5. Figs. 7 and 8 are respectively end and side elevations of the cam-blocks. spectively side elevation and plan of the abutments. Fig. 1l is aside elevation of the cam'. Fig. l2 is aplan of the cam. Fig. 1'3 isafront elevation of the cam. Fig. 14 is a cross-section on the line w :c of Figi, showing dashpot cylinder with its cut-off in position.

Vithin an outer casing G, to which are attached heads H H, secured to base-plate W, there is arranged a rotating cylinder C, with its pistons A, A', B, and B. Said cylinder is attached to a shaft N, which is mounted in journal-boxes K K. The rotating cylinder O is mounted on shaft N, and is constructed so as to have the annular cavities C4, formedby the rings C7 and CS and disk D, and is provided with abutments I, which are rmly Iixe'd in said cavities and act as pistons of said rotating cylinder, as shown in Fig. l. The stationary heads H are constructed so aste-'ferm the packing-disks againstwhich the rotating cylinder is packed, and are provided with the vare packed within the annular cavities of said rotating cylinders.' The abutment A is IOO provided with guide-bar a3, guide h2, packing I P, and with the cam-block f, which is secured to the journal@ and journal-lug a2. Thesaid abutment is controlled through its cani-block by cam F. Said cam is mounted by hub F2 on rotating shaft N, and h-as the flanges F F, forming the groove in which the camblockfoperates. Said piston by its cam is operated substantially parallel to the axis of rotation of the rotating cylinder. Said stationary heads H contain the steam-ports S and S and the exhaust-ports T and T', which admit and exhaust pressure into the rotating cylinders by means of passages Y Y in the disk D, which forms the partition between the cylinders, said passages making the admission and exhaust to the cylinders simultaneous and eliminating friction caused by end pressure.

As shown in Fig. 14, the guide-bar a3 is provided With the piston-head R2, which operates in dash-pot cylinder R. Said cylinder is connected to the stationary head H by the bracket H and guide I-I2. Steam is admitted to said cylinder through steam-ports S2, and is controlled by valve V in the steam-chest V', into which it is admitted by steam-pipe S3. The valve V is operated and controlled by valve-rod V2, which is connected by the compound lever L2 L4, operated by eccentric,

L through its rod L2.

The steam is admitted to dash-.pot cylinder R, and operates the piston-.head R2, which governs the reciprocations of the piston and allows the piston I to pass said abutments, which are operated substantially parallel to the axis of rotation of said' rotating cylinder. Said cylinder may be used in connection with cam F, reducing any jar which may be incident to the use of said cam, in which case the cam governs the motions of the ab utments,which are operated by the piston through the guide-A bar a3, which has been formed into the pistonrod and is provided with the piston-head. If found advisable, the cam F may be dispensed with and the abutment operated and controlled by the piston.

The operation is as follows: The abutment operates substantially parallel to the axis of rotation of the rotating cylinder and moves in seat H3 and is held in line by its guide-bar or piston-rod 0.3 and its Iguide h2, Which operates in the guide II2 and in the guideway h respectively. Said Aabutment is controlled through its cam-block f, journaled on the cam-Y block lngl 0.2 by the journal a, and is operated bythe piston-rod R3, Which is secu-rely attached to the guide-barda. As shown in Figs. l and 2 abutment B has taken a position to allow the piston I to pass, and abutment A is packed in the annular cavity of said rotating cylinder. The steam having entered at port S is confined between said abutment A and piston I, which is driven in the direction indicated by the arrow until it takes the position as shown at I. Thev abutment B is moved in'ward after the passage of piston I, the exhausted steam escaping at port'l. Continuing the revolution, abutment A takes a position to allorir the piston I topass,

vrespective co-operatin g parts, are identical in construction to abutment A and its co-operating parts.

lVhile four abutments and'tWo pistons have been shown, I do not confine myself to this, as any number, one or more, may be used; and, furthermore, I do not confine myself to the construction shown, as the same may be varied without departing from the spirit of my invention.

Having thus ascertained the nature and set for-th the construction ofthe invention, what I claim as new, and desire to secure by Letters Patent, isf- I. A rotary engine having rotating cylinders, reciprocating abutments operating substantially parallel to the axis of rotation of said cylinders, rotating cams, and a disk forming a partition between said cylinders, substantially as set forth.

2. A rotary engine having rotating cylinders, lreciprocating abutments operating substantially parallel to the axis of rotation of said rotating cylinders, and rotating cams for controlling the reciprocations of the abutments, substantially as set forth.

3. Ina rotary engine, a rotating cylinder and reciprocating abutments operating substantially parallel to the axis of rotation of said rotating cylinder and controlled by a steam-.cy-linder, and rotatory cams for controlling the movements of said abutments.

4. In a rotary engine, a rotating cylinder, reciprocating abutments operating` in stationary heads, substantially parallel to the axis of rotation of said rotating cylinder, a steamcylinder, and a bar forming the piston-rod of IOC) the steam-piston head and forming the guid'ebar ofthe reciprocating abutments, forthe purpose set forth.

5. In a rotary engine, a rotating cylinder, reciprocatingabutments operating substantially parallel to the axis of rotation of said rotating cylinder, a cylinder, a rotating cam,

a bar formi-ng the piston-rod of the pistonhead and forming the guide-bar of the reciprocating abutments, and a cam-block lug'having a cam-block operating in said cam.. for the purposeset forth.

6. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said rotating cylinder, a rotating cam, a steamcylinder having steam inlet and exhaustports controlled by levers, for the purpose setforth.

IZO

guide-bar of the reciprocating abutment,

which guide-bar also forms the piston-rod of the dash-pot piston-head, for the purpose set forth.

S. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said cylinder, a rotating cam for controlling the movements of said abutments, and a steamcylinder having steam inlet and exhaust ports' controlled by levers operated by an eccentric and an eccentric-rod, for the purpose set forth.

9. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said cylinder, a steamfcylinder, a bar forming the guide-bar of the piston and the piston-rod of the piston-head, and a cam-block lug on the piston having a cam-block operatinginsaid cam, for the purpose set forth.

10. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said cylinder, a rotating cam, a cam-block lug hav# ing a cam-block operating in said cam, a steamcylinder, a bar forming the piston-rod of the piston-head, and guide-bar of the-reciprocating abutments, said cylinder having steam inlet and exhaust ports controlled by levers operated by an eccentric, for the purpose set forth.

11. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of the rotating cylinder, stationary heads with guides thereon, and guide-bars operating in said guides and forming the piston-rod for operating the abutments, for the purpose set forth.

12. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said cylinder, stationary heads, guides formed in brackets attached to said stationary heads, and guide-bars attached to the abutments and operating in said guides and forming the piston-rod for operating the abutments, for the purpose set forth.

13. In a rotary engine,a rotating cylinder, abutments, rotating cams, stationary heads having guides and guid eways, said abutments having guide-bars and guides sliding in the guides and guideways of the head, and camblock lugs having cam-blocks operating in said cam, for the purpose set forth.

14. In a rotary engine, a rotating cylinder, reciprocating abutments operating substantially parallel to the axis of rotation of said rotating cylinder, rotating cams, stationary heads having guides, guide-bars on said abutments operating in said guides and controlling the reciprocations of the abutments, and cam-block lugs on said abutments, having cam-blocks operating in said rotating cams, for the purpose set forth.

In testimony whereof I, SAMUEL Gr. BROSIU S, have signed my name to this speciticatiomin the presence of two subscribing Witnesses, on this 15th day of April, A. D. 1 891.

Witnesses:

J. HENRY KAISER, J osErH C. STACK. 

